Home / 11,439.53-15,785.27-6,403.05

Finding the Fourth Proportional to 11,439.53, 15,785.27 and 6,403.05

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Solution

The fourth proportional to 11,439.53, 15,785.27 and 6,403.05 is: 8,835.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.53 : 15,785.27 = 6,403.05 : x
  2. Step 2: Convert to fraction form
    11,439.53/15,785.27 = 6,403.05/x
  3. Step 3: Cross multiply
    11,439.53x = 15,785.27 × 6,403.05
  4. Step 4: Simplify right side
    11,439.53x = 101,073,873.07
  5. Step 5: Solve for x
    x = 101,073,873.07/11,439.53
  6. Step 6: Final answer
    x = 8,835.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.